CVE-2026-15706: Missing Authentication for Critical Function in Management API in Baylan Water Meters's BMS
Missing authentication for critical function vulnerability in Baylan Measuring Instruments Industry and Trade Inc. Baylan Smart Meter Management Application (BMS) allows Authentication Bypass.
This issue affects Baylan Smart Meter Management Application (BMS): before v1.1.10.142.
Security readout for executives and security teams
Plain-English summary
Baylan BMS versions before 1.1.10.142 may allow an unauthenticated network attacker to bypass authentication for critical management functions. Successful abuse could seriously affect sensitive data, system integrity, and service availability. The supplied sources do not establish how widely BMS is deployed or exposed.
Executive priority
Treat this as an immediate remediation priority for any deployed Baylan BMS, especially network-exposed management interfaces. Establish ownership, exposure, and version status promptly; restrict access while validating and applying the vendor-supported release.
Technical view
CVE-2026-15706 is a CWE-306 missing-authentication flaw in the BMS Management API. Its CVSS 3.1 score is 9.8: network-accessible, low complexity, no privileges or user interaction required, with potentially high confidentiality, integrity, and availability impact. The stated affected range is versions before 1.1.10.142.
Likely exposure
BMS deployments running versions before 1.1.10.142 are potentially affected. Risk is greatest where the Management API is reachable from the internet or other untrusted networks. The supplied evidence does not identify default exposure, deployment prevalence, or required configuration.
Exploitation context
The CVSS vector indicates potentially straightforward remote exploitation without credentials or user interaction. However, the CVE is not listed as KEV, and the supplied sources provide no evidence of active exploitation or a public proof of concept.
Researcher notes
The narrative states that versions before 1.1.10.142 are affected. The structured affected entry unusually lists version "0" and default status "unaffected," creating ambiguity. Confirm the authoritative affected range and release guidance with Baylan or the cited government advisory before final asset classification.
Mitigation direction
Inventory Baylan BMS deployments and record each installed version.
Prioritize systems running versions earlier than 1.1.10.142.
Verify vendor guidance, then update to version 1.1.10.142 or later.
Restrict Management API access to trusted administrative networks.
Monitor API access for unexpected unauthenticated management activity.
Validation and detection
Confirm each deployment reports version 1.1.10.142 or later.
Verify the Management API is not publicly reachable.
Check firewall and access-control rules for trusted-source restrictions.
Confirm critical API functions reject unauthenticated requests using authorized defensive testing.
Review relevant logs for unexplained management actions or configuration changes.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
1CVSS vectors
3Timeline events
1ADP providers
2Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: total
CVSS vector scores
1 official score
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-306 · source CWE mapping
Missing Authentication for Critical Functionality
Missing Authentication for Critical Functionality represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.